I’ve searched the forums and not quite been able to find out what I’m looking for, in the way of adjusting total water applied per week to my lawn. This will be, basically, if after a month or so, I find my lawn zones are always too wet, or are drying out too quickly, on a weekly/continual basis.
Some posts I’ve read seem to indicate that, at least for some schedules, there is an overall adjustment for the schedule, aka “Budget” it many/most other controllers out there. Yes, that is used in them to change the amount based on temperature and season, but could also be considered as wetter/dryer. While I know you can change the
So, what is the best way OVERALL to increase or decrease the amount of water Rachio applies per week or on average? It should /not/ involve changes to the zone specs, as they are what they are. And I can’t imagine Rachio is so conceited as to think the system will be exactly right all the time, without adjustment.
Now, if one zone stays too dry, or too wet, of course any adjust should (I would think) be made in the Zone definition. I could change the minutes in the schedule, of course, but I would think that next time I made zone or other changes, it would recalculate those minutes, eliminating my change. (No?)
The first/easiest place that comes to mind is the Nozzle inches/hour under Advanced Zone definition. Of course, as with most other values under Zone definition, I’d be lying, if I’d confirmed my actual inches/hour. So I’d have to keep a record of my original calculated values, as well as what changes I tried, and how they worked.
Another possible change might be the Crop Coefficient, changing it from the 65% for Warm Season Grass. Actually, I have Centipede grass, which from what I read has an 85% Crop Coefficient. Hmmmm, just changed one of my zones from a CC of 65% to 85%, and this did NOT change the minutes of water (or inches applies)
Okay, tried changing the Efficiency, that will certainly change it. But when I went from 70% to 80% efficiency (a 14% increase), the watering time only went down by 6%. Which I don’t understand AT ALL! In fact, if I enter a measured Nozzle Inches per hour, that would take into account efficiency, and it should have no effect on the program (only in the actual gallons of water used). Confusing, this is.
So it seems to me that the only thing you can adjust for a zone being too wet or dry is the Nozzle inches per hour, then ONE thing you can actually measure accurately using catch cups! Again, no?